Adjusting the roll-off

[griffinconst]

If my fronts specs are 80hz-22khz, where should I set the filter on my sub? Should it be at 80 or should I send more to the sub.
Please forgive if this should have been in the subwoofer section.

 

[Adam]

Is the 80Hz rating at -3dB? If so, I'd set the crossover to 90Hz to start with. If you set it to 80Hz, then you'll have a dip for sure because your speakers will be rolling off at that point. The best setting will depend on your speakers, sub, and (to some extent) your room and placements.

You can download (or buy CDs that contain) test tone frequencies and run through those with an SPL meter to see if you're getting a dip around the crossover frequency.

 

[markw]

How are you feeding the sub?

If it's from the sub/LFE output of a receiver, thenthe sub's xover should be either disabled or turned to the highest frequency possible. The receiver will control what the sub sees.

If not, set it to where it sounds best. You can't really depend on speaker specs for this.

It should be set so the sub starts to cut off right below where the mains start their decent into inaudibiity. It's a balancing act but it can be done.

I recommend you pick up the CD "Flight of the Comic Hippo" by "Bela Fleck and the Flecktones" and play the title track to dial in your system.

 

[griffinconst]

Thanks for that reminder. I am running through the LFE so my reciever chose the crossover for me. I have an Onkyo 805.